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Finding the Fourth Proportional to 139,900.14, 209,912.18 and 73,324.44

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Solution

The fourth proportional to 139,900.14, 209,912.18 and 73,324.44 is: 110,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,900.14 : 209,912.18 = 73,324.44 : x
  2. Step 2: Convert to fraction form
    139,900.14/209,912.18 = 73,324.44/x
  3. Step 3: Cross multiply
    139,900.14x = 209,912.18 × 73,324.44
  4. Step 4: Simplify right side
    139,900.14x = 15,391,692,681.06
  5. Step 5: Solve for x
    x = 15,391,692,681.06/139,900.14
  6. Step 6: Final answer
    x = 110,019.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.